package solution;

import java.util.Scanner;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: ws
 * Date: 2023-01-17
 * Time: 19:59
 */
public class Solution {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNext()) {
            char bt = scanner.next().charAt(0);
            if (bt < 97 || bt > 122) {
                System.out.println("不是小写字母！");
            } else {
                bt -= 32;
                System.out.println(bt);
            }
        }
    }
}
